Add splitext filter

docsite/rst/playbooks_filters.rst

@@ -350,6 +350,11 @@ To get the relative path of a link, from a start point (new in version 1.7)::
 
     {{ path | relpath('/etc') }}
 
+To get the root and extension of a path or filename (new in version 2.0)::
+
+    # with path == 'nginx.conf' the return would be ('nginx', '.conf')
+    {{ path | splitext }}
+
 To work with Base64 encoded strings::
 
     {{ encoded | b64decode }}

lib/ansible/plugins/filter/core.py

@@ -316,6 +316,7 @@ class FilterModule(object):
             'expanduser': partial(unicode_wrap, os.path.expanduser),
             'realpath': partial(unicode_wrap, os.path.realpath),
             'relpath': partial(unicode_wrap, os.path.relpath),
+            'splitext': partial(unicode_wrap, os.path.splitext),
 
             # failure testing
             'failed'  : failed,